Home / 39,974.96-55,164.56-21,825.06

Finding the Fourth Proportional to 39,974.96, 55,164.56 and 21,825.06

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Solution

The fourth proportional to 39,974.96, 55,164.56 and 21,825.06 is: 30,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,974.96 : 55,164.56 = 21,825.06 : x
  2. Step 2: Convert to fraction form
    39,974.96/55,164.56 = 21,825.06/x
  3. Step 3: Cross multiply
    39,974.96x = 55,164.56 × 21,825.06
  4. Step 4: Simplify right side
    39,974.96x = 1,203,969,831.87
  5. Step 5: Solve for x
    x = 1,203,969,831.87/39,974.96
  6. Step 6: Final answer
    x = 30,118.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.